You've likely heard of "The Gates", an art installation in Central Park by the Christo and Jeanne-Claude.
The other night, I thought about how I would be taking a bunch of photos if I were there. Then I thought- I bet there are some good ones, let's check Flickr". I searched for the tag "thegates" and found over 1200 photos of the art installation. It took maybe 10 seconds for me to find them. It was overwhelming, but really satisfying too.
Today there are over 2000 photos with that tag. I'm not sure it could get any easier, unless some sort of rating system showed me the best of the 2000 as deemed by viewers.